philsturgeon/codeigniter-restserver — pull request #194 by goFrendiAsgard (2013-02-21 15:27:45+00:00)
Title: Remove $this->load->library('security');

Somehow I found an error (unable to load security class) when useing codeigniter-restserver.
A quick googling take me to http://stackoverflow.com/questions/6268884/security-class-in-codeigniter and it just simply solve the problem.